Dell OptiPlex 9020 (Mid 2013) - Manual (Page 24)

Installing the Processor
1. Insert the processor into the processor socket. Ensure the processor is properly seated.
2. Press the release lever down and then move it inward to secure it with the retention hook.
3. Install:
a) heat sink assembly
b) drive cage
c) front bezel
d) cover
4. Follow the procedures in After Working Inside Your Computer .
Removing the Coin-Cell Battery
1. Follow the procedures in Before Working Inside Your Computer .
2. Remove:
a) cover
b) front bezel
c) drive cage
d) heat sink
3. Press the release latch away from the battery. The battery will pop-out from the socket, lift it out of the computer.
Installing the Coin-Cell Battery
1. Place the coin-cell battery into its slot on the system board.
2. Press the coin-cell battery downward until the release latch springs back into place and secures it.
3. Install:
a) heat sink
b) drive cage
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